Before you can issue your first invoice and get started as a sole trader, you'll need to apply for an Australian Business Number (ABN). In this guide, we’ll show you step-by-step how to apply for an ABN as a sole trader, and answer all the questions you might have about the process.

Who needs an ABN?

If you’re just starting out as a freelancer, you might be wondering, “Do I need an ABN?” The answer is simple:

If you are operating your own business in Australia and expect an annual turnover of at least $75,000 AUD, you are required to create an ABN. Even if you are earning less than this, it’s still a good idea to get an ABN if you are a sole trader in case you pass that threshold at some point in the future. There is no cost to creating an ABN and it only takes a few minutes to register, so it’s a win-win situation for sole traders.  

You’ll need an ABN when registering for GST, and it’s important to include the number on any invoice you send. If you don’t list your ABN on your invoices, you could be subject to a high tax rate of 47% on payments you receive under the PAYG system.

How do you know if you’re operating a business in Australia? Generally, if you are providing goods and/or services in exchange for payment with Australian businesses, you should apply for an ABN. This is true even if your income from these businesses is quite low, or if you are employed elsewhere simultaneously. For more detail, review this ABN entitlement checklist from the Australian Business Register.

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How to apply for an ABN

You can apply for an ABN online at the Australian Business Registry and the process usually takes around 15 minutes if you have all the necessary information.

There are services that can do all the hard work for you. For example, Easy Companies will get you an ABN in 2 minutes for less than $50 AUD. Not bad!

If you’d rather apply on your own, here’s how to do it:

Before you start: Choose your sole trader business name

Before you begin your ABN application, decide whether you’ll be doing business under your own name (ex. “Jane Smith”) or a business name (ex. “Jane Smith Web Design”).

If you plan to do business under your own legal name, you can skip ahead to step 1 below and start your sole trader ABN application now. If you plan to create a business name, then you’ll need to first check the business name availability using this tool. If your business name is already taken, look for slight variations or try something else.

Note: There are fees involved to register your business name: $36 AUD for one year and $85 for three years.

Once you’ve determined it’s available, you can register your business name at the same time as you apply for an ABN.

1. Gather the information you’ll need to apply

If you’re applying as a sole trader, you’ll need documents to prove your identity (a passport, ID card, driver’s license, or birth certificate), your Tax File Number (TFN), and details of the services you intend to provide. You can also review the Australian Business Register’s website for a more in-depth list of what you’ll need.

2. Visit the ABN registration website

Use the link above to begin the registration process. At the start, you can choose to register for an ABN on its own, or you can also register your business name if you’re taking that route.


At the bottom of the screen, you’ll also see options to register for GST and PAYG. If you aren’t sure whether you should register for these options, it’s best to speak with an accountant.

3. Create an account

Next, you’ll need to create an account. Keep track of your login credentials, as you may need to revisit this portal when filing taxes or reapplying for an ABN later on.

4. Select your business structure

On the next screen, you’ll be prompted to select your business structure. For sole traders, select “Individual.”

5. Enter your business details and confirm your ABN application

The rest is simple: Follow the prompts to enter your details, and once you’ve reviewed it all, confirm your application. These are the sections you’ll need to fill in:

Frequently Asked Questions about ABNs

Now that you’ve got your ABN sorted, what do you do with it? Here is some guidance for using your ABN properly going forward:

How long does it take to get my ABN after I apply?

If you’ve provided all of the necessary information, you will most likely receive notification of your ABN instantly after submitting your application.

If this didn’t happen for you, contact the Australian Business Register directly to inquire about the status of your application.

Where do I put my ABN on invoices and documents?

As we mentioned above, you’ll need to put your ABN on every invoice you send, as well as any official documents (like your letterhead). This is an important step to avoid higher taxation each quarter.

The precise placement of your ABN on your invoices is up to you—just make sure it’s clearly visible. If you’re a Rounded user, your ABN will automatically appear on the top right of your invoices, under your name and details.

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What’s the difference between an ABN and a TFN?

A Tax File Number (TFN) and an Australian Business Number (ABN) are separate, unique numbers. Every person in Australia needs a TFN to complete an annual tax return, but you only need an ABN if you are running a business.

ABN vs TFN

As a sole trader, your ABN and your TFN will be linked. This is because as a sole trader your business is the same legal entity as yourself (unlike a registered company). Any money you earn through your ABN by issuing invoices to your clients forms your taxable income, which you’ll declare in your annual tax return.

Related: Everything you need to know about tax for sole traders

How do I look up my ABN?

If you ever lose track of your ABN, don’t worry—you can easily find it using the ABN search function on the Australian business register website. Just enter your name or business name into the search bar, and you should see yourself listed with your ABN number.

Does an ABN expire?

ABNs do not have an expiry date—once it’s yours, it’s yours for good unless it’s cancelled. The Australian Tax Office routinely reviews ABNs and will cancel any that have been inactive.

You shouldn’t have to worry about this as long as you are continually conducting business, but if you close down your business or stop providing services at any time, you should cancel your own ABN, which you can do here.

If your ABN is cancelled in error, you can contact the ATO or reapply for an ABN under the same business structure.

How do I update my ABN details?

If you move house or change any of your other details, you need to update your ABN information through this website.

I’ve got an ABN. Now what?

Once you’ve got your ABN, keep the number handy, as you’ll need it when sending invoices and filing taxes.

Rounded makes invoicing clients easy—you’re ABN is automatically attached in the right place on every invoice you send.

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